Board/OITE Review: Hand 03 - Wrist + Scaphoid Injuries
Oct 29, 2023
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Dr. Cole, a skilled orthopaedic professional, and Dr. Woolwine, an expert in orthopaedic education, dive deep into wrist and scaphoid injuries. They highlight the complications from distal radius fractures and introduce the SOON classification to explain tendon ruptures. Discussions include advancements in dorsal bridge plating for complex fractures and management strategies for wrist dislocations. They also cover crucial diagnostic techniques for scaphoid fractures, emphasizing the pivotal role of snuff box tenderness and imaging methods.
The external fixation of distal radius fractures can lead to complications such as inadequate fragment control and pin site infections.
Dorsal bridge plating is crucial for treating highly comminuted fractures, offering enhanced stability and support during recovery.
Deep dives
External Fixation Complications
External fixation of distal radius fractures may lead to several complications, including inadequate fragment control, fracture subsidence, and stiffness of the fingers. Pin site infections are a common concern when inserting pins through the metacarpal and into the distal radial shaft. Complications can also arise from superficial radial nerve involvement and potential damage to extensor tendons during the procedure. An essential aspect to consider is the positioning of the volar plate; its prominence in relation to the volar lip of the distal radius significantly influences the risk of flexor pollicis longus ruptures.
Indications for Dorsal Bridge Plating
Dorsal bridge plating is indicated primarily for highly comminuted fractures and polytrauma patients requiring structural support for weight-bearing. This technique enhances axial load stiffness, proving beneficial for patients using assistive devices like rolling walkers. A typical dorsal bridge plate attaches to the radius and one or two metacarpals; the choice of metacarpal can minimize the risk of extensor tendon damage. When addressing distal radius fractures, a strategic approach to achieving radial height and maintaining proper alignment is critical for optimal recovery.
Understanding TFCC Injuries and Treatment
The triangular fibrocartilage complex (TFCC) bridges the radius and ulna, with its superficial and deep fibers playing distinct roles in joint stability. Deep TFCC fiber injuries may lead to distal radioulnar joint instability, impacting the functional load-bearing capacity of the wrist. Diagnostic imaging such as PA x-rays can determine ulnar variance, and treatment might involve wrist arthroscopy for debridement or reconstruction. Chronic conditions like ulnar impaction syndrome arising from malunion or shortening of the distal radius emphasize the importance of accurate evaluation and management strategies.
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Enjoy another episode from our board review series featuring Dr. Cole and Dr. Woolwine.
This episode is sponsored by the American Academy of Orthopaedic Surgeons:
Filled with content that has been vetted by some of the top names in orthopaedics, the AAOS Resident Orthopaedic Core Knowledge (ROCK) program sets the standard for orthopaedic education.
Whether ROCK is incorporated into your residency curriculum, or you use it independently as a study tool, the educational content on ROCK is always free to residents. You’ll gain the insights and confidence needed to ensure a successful future as a board-certified surgeon who delivers the best patient care. Log on at https://rock.aaos.org/.
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